Its actually not really "a Pontiac", but a Holden Commodore which is built here in Australia.

As for it waxing the M5.....Only in the mind of Holden Fanbois.....

The E39 M5..had it's ass handed toit the Monaro...I remember it because I was in PErth and the Mg came out and thats why Bob lutz suddelny got a hard on for Holden products.........and the holden was about 30,000 cheaper...V8 vs V8